A new trial may be granted to all or any of the parties and on all or part of the issues for any of the following causes:
(a) Irregularity in the proceedings of the court, referee, jury, or prevailing party, or any order or abuse of discretion, whereby the moving party was deprived of a fair trial;(b) Misconduct of the jury or prevailing party;(c) Accident or surprise which could not have been prevented by ordinary prudence;(d) Material evidence newly discovered, which with reasonable diligence could not have been found and produced at the trial;(e) Excessive or insufficient damages, appearing to have been given under the influence of passion or prejudice;(f) Errors of law occurring at the trial, and objected to at the time or, if no objection need have been made pursuant to Rules 46 and 51, plainly assigned in the notice of motion;(g) The verdict, decision, or report is not justified by the evidence, or is contrary to law; but, unless it be so expressly stated in the order granting a new trial, it shall not be presumed, on appeal, to have been made on the ground that the verdict, decision, or report was not justified by the evidence. On a motion for a new trial in an action tried without a jury, the court may open the judgment if one has been entered, take additional testimony, amend findings of fact and conclusions of law or make new findings and conclusions, and direct entry of a new judgment.